2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 67
Diagnostic Fault Information
Circuit/System Description
During a frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the
deployment loop in order to deploy the driver steering wheel air bag. The SDM performs continuous diagnostic tests on the deployment loops to
check for proper circuit continuity and for shorts to ground or voltage. There are 2 shorting bars used within the driver steering wheel air bag coil
connector which will short together both driver steering wheel air bag stage 1 control circuit and driver steering wheel air bag stage 1 control circuit
and both driver steering wheel air bag stage 2 control circuit and driver steering wheel air bag stage 2 control circuit when the connector is
disconnected. This will help to prevent unwanted deployment of the air bag during servicing.
Conditions for Running the DTC
Ignition voltage is between 9-16 V.
Conditions for Setting the DTC
B0012 01 stage 1 or B0013 01 stage 2
The driver steering wheel air bag control circuit is shorted to voltage for 2 seconds.
B0012 02 stage 1 or B0013 02 stage 2
The driver steering wheel air bag control circuit is shorted to ground for 2 seconds.
B0012 04 stage 1 or B0013 04 stage 2
The driver steering wheel air bag control circuit is open for 2 seconds.
B0012 0D stage 1 or B0013 0D stage 2
The driver steering wheel air bag deployment loop resistance is greater than 5.5 ohm for 2 seconds.
B0012 0E stage 1 or B0013 0E stage 2
The driver steering wheel air bag deployment loop resistance is less than 1.7 ohm for 2 seconds.
Action Taken When the DTC Sets
* The SDM requests the instrument panel cluster to illuminate the AIR BAG indicator.
* The SDM will store a DTC, however if an event occurs the system will still attempt deployment.
Conditions for Clearing the DTC
* The condition for setting the DTC is no longer exists.
* A history DTC will clear once 100 malfunction-free ignition cycles have occurred.
Reference Information
Schematic Reference
SIR Schematics (See: Diagrams/Electrical Diagrams/Air Bag Systems)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
SIR System Description and Operation (See: Restraints and Safety Systems/Air Bag Systems/Description and Operation/SIR System)
